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View Full Version : Terra-Fox & an adjustable/removable seat.



DannyC
05-26-2014, 08:56 AM
What can I say folks, I am embarrassed at my slow rate of progress.

Basically I decided I had made a few poor decisions and I was forced therefore to remove two tubes and effectively "start-over" on the seat support.

http://s5.postimg.org/jhoz78cbn/P1030045.jpg (http://postimg.org/image/jhoz78cbn/)http://s5.postimg.org/ale73alpf/P1030048.jpg (http://postimg.org/image/ale73alpf/)

So, now I am at a position where I do have the lower seat-mount resolved and as you can see (I hope) from the first picture that the seat and its lower mounting are held in place by the QR pin through the two Tabs/Lugs/Brackets that are welded to the main frame-tube. This lower attachment allows the seat to be reclined all the way back to a very low 32-degrees off horizontal if required (sleeping-position??? :)).
A consequence of this mounting method is that the seat is not mounted directly on the main beam and the top of the lower seat mounting is 2 and 5/8ths of an inch above the main tube.
This "raised-up" seating position is going to be interesting in terms of BB placement (will I need to mount the BB above the main tube on a mast I wonder).

Anyway, I am now trying to determine what would be the best upper mounting for the seat.
As you can see in the second (right) picture it would be possible to mount a bracket in between the two "ribs" of the seat and have either:


A single central trailing arm that passes through a slot cut in the rear seat support tube with holes along the trailing arm at regular intervals to allow for varying levels of "recline" angle and another "pin" (pop-pin or similar) that is passed through the seat support tube and the trailing arm. Or;
Two trailing arms that pass either side of the rear seat support tube and are similarly equipped with holes along their length and held in place again with a pop-pin or similar.



My thinking leans towards option 2 as it would also provide an added degree of rigidity and prevent the seat from being able to twist along its long axis and it just seems that 3 mounting points would provide a more secure and firm fixing than just two (unless a single central trailing arm were sufficiently thick).

As always, your thoughts are welcomed, and if practical experience out there has a "Don't do that Dan, because.." story then I am all-ears before I wreck a $100 seat.



Regards,

Dan.